/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package Gui.login;

import java.io.File;
import javax.swing.filechooser.FileFilter;


/**
 *
 * @author LESLEY
 */
public class ZipFileFilter extends FileFilter {

    // Accept all directories and all .zip files.
    @Override
    public final boolean accept(File f) {
        if (f.isDirectory()) {
            return true;
        }
        String extension = getExtension(f);
        if (extension != null) {
            if (extension.equals(zipExtension)) {
                return true;
            }
        }
        return false;
    }

    // The description of this filter.
    @Override
    public final String getDescription() {
        return ("Zip-files (*.zip)");
    }

    // Get the extension of a file.
    private final String getExtension(File f) {
        String ext = null;
        String s = f.getName();
        int i = s.lastIndexOf('.');

        if (i > 0 &&  i < s.length() - 1) {
            ext = s.substring(i+1).toLowerCase();
        }
        return ext;
    }


    private final String zipExtension = "zip";

}
